1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * LXT PHY drivers
4 *
5 * Copyright 2010-2011 Freescale Semiconductor, Inc.
6 * author Andy Fleming
7 */
8 #include <common.h>
9 #include <phy.h>
10
11 /* LXT971 Status 2 registers */
12 #define MIIM_LXT971_SR2 0x11 /* Status Register 2 */
13 #define MIIM_LXT971_SR2_SPEED_MASK 0x4200
14 #define MIIM_LXT971_SR2_10HDX 0x0000 /* 10 Mbit half duplex selected */
15 #define MIIM_LXT971_SR2_10FDX 0x0200 /* 10 Mbit full duplex selected */
16 #define MIIM_LXT971_SR2_100HDX 0x4000 /* 100 Mbit half duplex selected */
17 #define MIIM_LXT971_SR2_100FDX 0x4200 /* 100 Mbit full duplex selected */
18
19
20 /* LXT971 */
lxt971_parse_status(struct phy_device * phydev)21 static int lxt971_parse_status(struct phy_device *phydev)
22 {
23 int mii_reg;
24 int speed;
25
26 mii_reg = phy_read(phydev, MDIO_DEVAD_NONE, MIIM_LXT971_SR2);
27 speed = mii_reg & MIIM_LXT971_SR2_SPEED_MASK;
28
29 switch (speed) {
30 case MIIM_LXT971_SR2_10HDX:
31 phydev->speed = SPEED_10;
32 phydev->duplex = DUPLEX_HALF;
33 break;
34 case MIIM_LXT971_SR2_10FDX:
35 phydev->speed = SPEED_10;
36 phydev->duplex = DUPLEX_FULL;
37 break;
38 case MIIM_LXT971_SR2_100HDX:
39 phydev->speed = SPEED_100;
40 phydev->duplex = DUPLEX_HALF;
41 break;
42 default:
43 phydev->speed = SPEED_100;
44 phydev->duplex = DUPLEX_FULL;
45 }
46
47 return 0;
48 }
49
lxt971_startup(struct phy_device * phydev)50 static int lxt971_startup(struct phy_device *phydev)
51 {
52 int ret;
53
54 ret = genphy_update_link(phydev);
55 if (ret)
56 return ret;
57
58 return lxt971_parse_status(phydev);
59 }
60
61 static struct phy_driver LXT971_driver = {
62 .name = "LXT971",
63 .uid = 0x1378e0,
64 .mask = 0xfffff0,
65 .features = PHY_BASIC_FEATURES,
66 .config = &genphy_config_aneg,
67 .startup = &lxt971_startup,
68 .shutdown = &genphy_shutdown,
69 };
70
phy_lxt_init(void)71 int phy_lxt_init(void)
72 {
73 phy_register(&LXT971_driver);
74
75 return 0;
76 }
77